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. 2019 Jul 26;70(12):2663–2672. doi: 10.1093/cid/ciz704

Figure 1.

Figure 1.

Piecewise regression lines for head circumference, weight, and length z scores over 12 months for proportional microcephaly, disproportional microcephaly, and Zika virus–infected infants, knot at 4 months. The figure shows mean z scores and piecewise regression (prediction) lines of mean z scores for head circumference, weight, and length during the first year of life for each of the 3 ZIKV-exposed infant groups (PM, DM, SGA). Abbreviations: DM, disproportional; PM, proportional; SGA, small for gestational age.